When you listen to the radio, watch TV, or cook food in a microwave, you are using a device that makes use of man-made electromagnetic waves. Which statement about electromagnetic waves is false?
- Electromagnetic waves travel at the speed of light in a vacuum.
- Electromagnetic waves need a medium to travel through.
- Different wavelengths of light are interpreted by our eyes as different colors.
- The transfer of energy as electromagnetic waves is called electromagnetic radiation.
Answers: 3
Physics, 22.06.2019 16:20, brittanysanders
What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g
Answers: 2
Physics, 22.06.2019 20:30, laylay2380
Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm
Answers: 3
Physics, 22.06.2019 22:30, nickocasamplonp6mlob
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
Answers: 2
When you listen to the radio, watch TV, or cook food in a microwave, you are using a device that mak...
Mathematics, 24.09.2020 03:01
Spanish, 24.09.2020 03:01
Biology, 24.09.2020 03:01
Mathematics, 24.09.2020 03:01